Uni Filter NU-3238ST Two-Stage Air Filter for Yamaha Dirt Bikes

The Uni Filter NU-3238ST is a high-performance replacement air filter engineered specifically for Yamaha dirt bikes. This premium two-stage air filter is designed to fit your factory air box exactly like the original equipment filter, ensuring a perfect seal and optimal performance.

Key Features:

• Innovative two-stage foam design separates into dual layers for thorough, easy cleaning
• Unsurpassed airflow characteristics combined with superior dirt-stopping filtration
• Ultra Seal grease groove molded into the thin, tear-resistant base for leak-free sealing
• Trusted by factory Yamaha, Kawasaki, and Suzuki off-road racing teams
• Reusable and serviceable—clean with grease-cutting dishwashing detergent, re-oil, and reinstall
• Proudly made in the USA

Each foam layer can be serviced separately, allowing you to maintain maximum airflow while ensuring complete cleaning between rides. The virtually indestructible Ultra Seal base prevents tearing during installation and removal, while the integrated grease groove creates an airtight seal against your air box. This is the best-selling replacement air filter choice for competition motorcycles and ATVs, delivering professional-grade performance for recreational and racing applications alike.